A literature analysis of power frequency electric field testing data / 中华劳动卫生职业病杂志

ABSTRACT

<p><b>OBJECTIVE</b>To analyze the literature on power frequency electric field testing data and to propose views and suggestions for current testing.</p><p><b>METHODS</b>The literature on power frequency electric field testing data published in the previous years was searched to identify 306 articles involving 193 valid testing data. Mann-Whitney test and Wilcoxon W test were used for analyzing the testing data.</p><p><b>RESULTS</b>The classification of data was carried out according to one quarter of occupational exposure limit (1.25 kV/m), one half of the exposure limit (2.5 kV/m), and the exposure limit (5 kV/m). The structure of testing data showed a significant difference between the non-power facility group and the power facility group (P<0.05).</p><p><b>CONCLUSION</b>As occupational hazard factors, the radiation exposure from power frequency electric field is extensive. However, the power frequency electric field testing data in actual workplaces except high-voltage power facilities are far less than the occupational exposure limit with little harmfulness. There is a phenomenon of excessive testing at present.</p>